EXPERIMENTAL STUDY OF THERMOCHEMICAL TREATMENT OF SPENT ION-EXCHANGE RESINS

摘要

A thermochemical treatment technique was investigated for application to the volume reduction of spent ion-exchange resins of nuclear power plants.The thermochemical treatment technique uses powder metal fuel to incinerate the resins.Insignificant amounts of soluble species were found in the slag from the thermochemical treatment of H-type cation exchange resins.The slag could be solidified firmly with magnesium-potassium-phosphate ceramics.The volume ratio of initial resin to the final ceramics form was about 10.Leaching rates of radionuclides from the ceramics were low.Thus the thermochemical treatment technique was confirmed to applicable to the volume reduction of spent ion-exchange resins.